期刊
POLYMER DEGRADATION AND STABILITY
卷 88, 期 3, 页码 489-503出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.polymdegradstab.2004.11.021
关键词
degradation; LDPE films; ageing; mechanical behaviour; greenhouse films
The effect of tensile stress and of a drastic agrochemical (Vapam) on the ageing of low density polyethylene (LDPE) greenhouse films is presented. The synergistic effect of these two critical ageing factors with UV radiation and temperature on the ageing of selected LDPE films was investigated under artificial ageing conditions. The LDPE used in the present work was non-stabilised in order to investigate the basic characteristics of ageing in a very short period. The ageing was monitored through the changes of selected mechanical properties of the polyethylene film before and after ageing. A modified artificial ageing procedure is proposed, considered to simulate in a more realistic way the weathering of LDPE greenhouse films. (c) 2005 Elsevier Ltd. All rights reserved.
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